200803602200803602
九、發明說明 【發明所屬之技術領域】 本發明係關於一種有機EL( Electroluminescence)裝 置，尤其，關於一種可將其光取出配置於從如薄膜電晶體 (TFT ( Thin Film Transistor ))之驅動電路基板的相反 側進行之頂發射型EL裝置的光取出部分之水及氧的捕捉 劑、頂發射型EL裝置。 【先前技術】 有機EL裝置係於有機材料中注入電子及電洞，電氣 上產生所謂發光材料之有機材料的激發狀態，藉由取出其 激發種之基底狀態的緩和時所產生之能量作爲光，以進行 顯示之下世代的顯示裝置。 有機EL裝置之構造係已提出二種之構造。亦即，從 配置有驅動電路之透明電極基板側取出光之底部放射構造 • 、及、與驅動電路基板相反側配置透明電極，驅動電路不 被遮蔽，從廣的開口部取出光之頂發射構造。頂發射構造 係除了開口部大之外，尙很容易地使直接驅動各像素之薄 膜電晶體組入於驅動電路中。 ~ 有機EL裝置之作動機構係依據於有機材料進行反覆 之氧化還原反應。因此，即使選定使用熱力學上安定的有 機材料而與理論速度上的氧及/或水之反應性高，故受到 微量之水及氧的影響而性能劣化。 是故，爲配置有機EL裝置一般係可使用密封容器， -5- 200803602 (2) 對此必須極力地使氧及/或水分保持於微量以下。因此， 有機EL裝置之製作係在超高真空下及/或惰性環境下進行 製造操作。 進一步，就有機EL裝置之構成而言，係可量藉由將 捕捉從源自材料之釋氣及/或密閉容器的密閉部份侵入的 * 劣化因子之捕捉劑配置於電子裝置內，俾儘可能地減少此 等之影響。 φ 但，可除去頂發射型有機EL裝置之氧及水的兩者之 捕捉劑其能力充分者係被限制。 在專利文獻1中，係亦揭示一種使用對水及氧具有非 常高之反應性的鹼（土族）金屬類作爲捕捉劑的發明，但 其處理性爲明顯地伴隨危險之煩雜者，調配於裝置內之情 形亦其方法受到限制。進一步，配置此等之裝置會於廢棄 處分或事故等被破壞，曝露於一般之大氣環境中的高濃度 之水及/或氧時，有可能自然發火。 • 在專利文獻2記載的方法中，係藉由使用複數之材料 ，可細微地調整具捕捉能。但，其方法係依非常繁雜之複 數的加工步驟而製作目的之捕捉劑成型體’難謂簡單之方 法。又，於有機E L裝置中調配其成形體中’係使製作裝 ’ 置之步驟以外的成形體配置於裝置內之步驟成爲必須的。 進一步，在頂發射型裝置中配置其成形體之處無法充分地 形成於裝置內之問題仍存在。 另外，於專利文獻3中，其特徵在於：使用構成有機 EL層之材料作爲捕捉劑。但，與水及/或氧之反應速度係 -0 - 200803602 (3) 接受電子乃至電洞，亦即，在於激發狀態之有機材料係明 顯地很快速。因此，被提出來作爲捕捉劑之有機材料本質 上要保持其高功能，尙有疑問，進一步，有關透明性，含 有雜元素（氧、氮、硫等）之有機材料亦會劣化之情形下 進行著色一般爲已知，即使捕捉劑層很薄，亦有可能成爲 問題。 如此地，以往之捕捉劑係不太可捕捉氧及水之兩者， φ 即使有，處理亦危險者。又，爲使用於頂發射型有機EL 裝置，亦必須滿足透光性之要求。 [專利文獻1 ] 特開2002-008852號公報 [專利文獻2] 特開2005-270959號公報 [專利文獻3] 特開2006-004721號公報 ⑩ 【發明內容】 . (發明之揭示） (發明欲解決之問題） 本發明之課題在於提供一種處理容易，且光學特性優 並且對水及氧之捕捉能高的頂發射型有機EL裝置用之捕 捉劑。 本發明之課題在於提供一種可高品質的顯示且水或氧 之影響很小，並且壽命長之頂發射型有機EL裝置。 200803602 (4) (用以解決問題之手段） 若依本發明，可提供一種頂發射型有機EL裝置有機 電子裝置用捕捉劑，其特徵在於：由以下述化學式所示之 化合物所構成者；IX. EMBODIMENT OF THE INVENTION The present invention relates to an organic EL (Electroluminescence) device, and more particularly to a driving circuit capable of removing light therefrom, such as a TFT (Thin Film Transistor). The water and oxygen trapping agent and the top emission type EL device of the light extraction portion of the top emission type EL device are performed on the opposite side of the substrate. [Prior Art] An organic EL device injects electrons and holes into an organic material, electrically generates an excited state of an organic material of a so-called luminescent material, and extracts energy generated by mitigation of a substrate state of the excited species as light. To display the display device of the next generation. The construction of the organic EL device has been proposed in two configurations. In other words, the bottom emission structure of the light is taken out from the side of the transparent electrode substrate on which the drive circuit is disposed, and the transparent electrode is disposed on the side opposite to the drive circuit board, and the drive circuit is not shielded, and the top emission structure of the light is taken out from the wide opening. . The top emission structure is such that, in addition to the large opening portion, it is easy to incorporate a thin film transistor that directly drives each pixel into the driving circuit. ~ The actuation mechanism of the organic EL device is based on the redox reaction of the organic material. Therefore, even if a thermodynamically stable organic material is selected and the reactivity with oxygen and/or water at a theoretical speed is high, the performance is deteriorated by the influence of a trace amount of water and oxygen. Therefore, in order to arrange an organic EL device, a sealed container can be generally used, and -5-200803602 (2) It is necessary to keep oxygen and/or moisture to a minimum of a minimum. Therefore, the production of the organic EL device is carried out under an ultra-high vacuum and/or an inert environment. Further, in the configuration of the organic EL device, it is possible to dispose the trapping agent that captures the *degradation factor invading from the sealed portion of the material and/or the sealed portion of the sealed container in the electronic device. It is possible to reduce the impact of these. φ However, the ability to remove the trapping agent of both the oxygen and water of the top emission type organic EL device is limited. Patent Document 1 also discloses an invention in which an alkali (earth) metal having a very high reactivity with water and oxygen is used as a scavenger, but the handleability is a troublesome person who is obviously accompanied by danger, and is formulated in a device. The situation inside is also limited. Further, the device in which such a device is disposed may be destroyed by a disposal or an accident, and may be naturally ignited when exposed to a high concentration of water and/or oxygen in a general atmospheric environment. • In the method described in Patent Document 2, the capture energy can be finely adjusted by using a plurality of materials. However, the method is a simple method for producing a target trapping agent molded body in accordance with a very complicated processing step. Further, in the organic EL apparatus, it is necessary to arrange a molded body other than the step of placing the manufacturing apparatus in the molded body in the apparatus. Further, there is still a problem that the formation of the formed body in the top emission type device cannot be sufficiently formed in the apparatus. Further, Patent Document 3 is characterized in that a material constituting the organic EL layer is used as a scavenger. However, the reaction rate with water and/or oxygen is -0 - 200803602 (3) Accepting electrons and even holes, that is, the organic materials in the excited state are obviously very fast. Therefore, the organic material proposed as a trapping agent is essential to maintain its high function, and there is no doubt that further, regarding the transparency, the organic material containing a hetero element (oxygen, nitrogen, sulfur, etc.) is also deteriorated. Coloration is generally known, and even if the capture agent layer is thin, it may become a problem. As a result, conventional capture agents are less likely to capture both oxygen and water, and φ, if any, is dangerous to handle. Further, in order to use the top emission type organic EL device, it is also necessary to satisfy the requirements of light transmittance. [Patent Document 1] JP-A-2005-270959 [Patent Document 3] JP-A-2006-004721 (Patent Document 3) [Invention] [Invention of the Invention] Solution to the Problem An object of the present invention is to provide a trapping agent for a top emission type organic EL device which is easy to handle, has excellent optical characteristics, and has high capture energy for water and oxygen. An object of the present invention is to provide a top emission type organic EL device which can exhibit high quality and which has little influence of water or oxygen and has a long life. 200803602 (4) (Means for Solving the Problem) According to the present invention, there can be provided a trapping agent for an organic electronic device of a top emission type organic EL device, which is characterized by being composed of a compound represented by the following chemical formula;
R1R2R3M (Rl、R2及R3係分別由選自氫原子、烷基、烯基、炔基 、環式烷基、芳基、烷氧基、羧基、硫醇及2級胺基所構 成之群的一種者，且可互爲相同，亦可爲相異，但選擇如 具有1個以上之Μ - C鍵者；Μ爲鋁或硼）。 此處，亦可以使前述化合物及黏結劑溶解於溶劑中而 成之方式構成。 又若依本發明，可提供一種頂發射型有機EL裝置， # 其特徵在於：將前述捕捉劑配置於頂發射型有機EL裝置 之光取出部分而成者。 [發明之效果] 本發明之捕捉劑係處理容易且水及氧之捕捉能均極優 ，且即使極微濃度亦可發揮充分的功能，又透光性等亦優 ，故可適於能寬廣地採取開口部之頂發射型有機EL裝置 ，同時並可大幅地改善發光壽命。又，本發明之捕捉劑係 可使捕捉劑溶液形成均一的溶液，故可藉由塗佈法配置於 -8- 200803602 (5) 頂發射型有機EL裝置之各式各樣的位置。 又，若依本發明之頂發射型有機EL裝置，可抑制因 水或氧造成之壽命降低，發揮可謀求長壽命化之效果。 (用以實施發明之最佳形態） 以下說明有關本發明之實施形態的頂發射型有機EL 裝置用之水及氧之捕捉劑、頂發射型有機EL裝置。 本發明之實施形態的水及氧捕捉劑之特徵係表示於下 述式（1 )之化合物單獨、顯示可減少水及氧之2官能性 之點，優於至今在有機EL面板所硏究之各種捕捉劑。 R1R2R3M ...... ( 1 ) 式（1 )中，Rl、R2及R3係分別獨立地由選自氫原 子、烷基、烯基、炔基、環式烷基、芳基、烷氧基、羧基 、硫醇基及2級胺基所構成之群的一種者，且可互爲相同 ，亦可爲相異，但選擇如具有1個以上之C - Μ鍵者·，此 處Μ爲鋁或硼。Rl、R2、R3之基係宜爲碳數1〜20，更宜 爲2〜1 8，可爲相同，亦可爲相異。此等之化合物係藉由水 分、氧等與此C-M鍵反應，俾發揮可用來作爲有機el裝 置用捕捉劑的功能。 與水之反應係如下式所示。 C - Μ + Η 2 〇 ~^ C —H + M ( OH) -9- 200803602 (6) 與氧之反應係如下式所示。 2C-M + 〇2— 2C — 0 — Μ 前述式（1 )之Rl、R2及R3之具體例係可適當地舉 例：氫、甲基、乙基、丙基、丁基、戊基、己基、庚基、 辛基、壬基、癸基、碳院基、十二碳院基、十六碳垸 基、十八碳烷基之碳數1〜18的碳基、丙烯基、丁烯基、 辛烯基、十二碳烯基、十八碳烯基之具有不飽和基的烯基 、丙炔基、苯基乙炔基之炔基、環丙基、環己基之脂環式 烷基、苯基、苯甲基之芳基、乙氧基、丙氧基、丁氧基等 之烷氧基等。此等烷基、烯基、炔基、烷氧基係可爲直鏈 狀，亦可爲環狀，亦可進行分枝。 以前述式（1 )所示之化合物的具體例，可舉例如三 乙基鋁、三正丙基鋁、三異丙基鋁、三環丙基鋁、三正丁 基鋁、三異丁基鋁、三第三丁基鋁、三-2-甲基丁基鋁、三 正己基鋁、三環己基鋁、三（2-乙基己基）鋁、三-正辛基 鋁、三正癸基鋁、三苯基鋁、三苯甲基鋁、二甲基苯基鋁 、二丁基苯基鋁、二異丁基苯基鋁、甲基二苯基鋁、乙氧 基二乙基鋁、乙氧基二正辛基鋁、三乙基硼、三丁基硼、 三正辛基硼、三正十二烷基硼、三苯基硼等。此等之化合 物係可單獨，或混合2種類以上之化合物而使用。 若考慮於與水分、氧等之反應所產生的生成物之蒸氣 -10- 200803602 (7) 壓，碳數爲8以上之基，較佳係三正辛基鋁、三-正癸基 鋁、三-正十二烷基鋁等。若考慮捕捉劑組成物，較佳係 三正辛基鋁、三-正癸基鋁。 本發明之實施型態所使用的捕捉劑之黏結劑的種類， 可爲無機系之材料，亦可爲有機系之材料。 ' 老機系黏結劑可舉例如烷氧基矽烷的聚合物。烷氧基 矽烷可舉例如四甲氧基矽烷、甲基三甲氧基矽烷、乙基三 φ 甲氧基矽烷、二甲氧基二甲基矽烷、二甲氧基二乙基矽烷 、四乙氧基矽烷、甲基三乙氧基矽烷、乙基三乙氧基矽烷 、二乙氧基二甲基矽烷、二乙氧基二乙基矽烷、二甲氧基 甲基苯基矽烷等。又，爲提升塗膜強度，亦可添加少量之 烷氧基鉻。 院氧基砂院的聚合物係於院氧基砂院中添加水 0.1 mol %以上，進一步添加極微量酸或鹼作爲觸媒，產生 反應。不添加觸媒而亦可藉加熱產生聚合反應。使反應溶 Φ 液以高溫進行濃縮乾燥，俾可得到聚合物，但宜再溶解於 溶劑中而保存。 ^ 有機系黏結劑係可使用不與捕捉劑之透明樹脂。例如 丙烯酸樹脂、苯乙烯樹脂等。又，可使用液狀聚合物、石 ' 油樹脂作爲有機黏結劑。液狀聚合物可舉例如液狀聚丁烯 、液狀聚丁二烯等。石油樹脂係可舉例如日石Ne〇P〇lymer 等。進一步，有機黏結劑可使用各種之橡膠。例如，亦可 使用苯乙烯-丁二烯橡膠、聚異丁二烯、聚丁二烯、丁基 橡膠等。 -11 - 200803602 (8) 又亦可混合有機系黏結劑與無機系黏結劑，亦可爲預 先反應之混成型的樹脂。就混成型之樹脂，可舉例如 Kaneka Gemlac等丙烯酸聚矽氧系。藉由使此等之透明樹 脂溶解於有機溶劑中，可製作塗膜形成用溶液。樹脂溶液 之濃度係使用l〇wt%以上，宜爲20〜80wt%。 ‘ 捕捉劑塗膜之製作係於黏結劑溶液中柑對於黏結劑之 固形分添加含有本發明化合物之捕捉劑1 〇wt%以上較佳係 φ 20〜80wt%，充分攪拌，得到均一的溶液。在惰性環境下， 使此捕捉劑溶液塗佈於頂發射型有機EL裝置之密封基板 、例如上蓋玻璃基板、或前述裝置之所希望的位置後，餾 去揮發成分。塗佈方法係可爲旋塗器、噴塗器、輥塗器、 噴塗器、液滴吐出法、點膠機等之方法，並無特別限定。 成膜溫度爲50°C以上，宜爲100〜200°C，只要可除去塗佈 溶液之溶劑等的揮發成分即可，並無特別限定。 組成物之塗佈方法係可使用旋塗法、輥塗法、簾塗法 φ 、浸塗法、噴塗法、液滴吐出法等之方法，並無特別限定 。較佳係噴墨方式。 成膜溫度爲50°C以上，更宜爲100〜150°C。只要可充 分地除去塗佈溶液之溶劑的溫度即可，並無特別限定。 ' 本發明之實施形態的頂發射型有機EL裝置用水及氧 之捕捉劑係處理容易且水及氧之捕捉能均極優。又，即使 極微濃度亦可發揮充分的功能，光學特性（可見光透過性 及折射率）均優。前述捕捉材之代表性光學特性係可見光 區域（ 400〜800nm)之光的透過率爲95%以上，且使用折 -12- 200803602 (9) 射率（波長：589.3nm (鈉 D線）·，在20 °C中）爲 1_2〜1·8。如此地，光學特性優，故可適於能寬廣地採取開 口部之頂發射型有機EL裝置，同時並可大幅地改善前述 有機EL裝置之發光壽命。R1R2R3M (R1, R2 and R3 are each selected from the group consisting of a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cyclic alkyl group, an aryl group, an alkoxy group, a carboxyl group, a thiol group and a quaternary amine group) One type, and may be the same or different from each other, but if it has one or more Μ-C bonds, Μ is aluminum or boron). Here, the compound and the binder may be dissolved in a solvent to form a composition. According to the present invention, it is possible to provide a top emission type organic EL device, which is characterized in that the above-mentioned trapping agent is disposed in a light extraction portion of a top emission type organic EL device. [Effects of the Invention] The scavenger of the present invention is easy to handle, and has excellent water and oxygen capture ability, and exhibits sufficient functions even at a very small concentration, and is excellent in light transmittance and the like, so that it can be suitably broadly used. The top emission type organic EL device of the opening portion is adopted, and the luminescence lifetime can be greatly improved at the same time. Further, the scavenger of the present invention allows the scavenger solution to form a uniform solution, and thus can be disposed in various positions of the top emission type organic EL device by the coating method in the -8-200803602 (5). Further, according to the top emission type organic EL device of the present invention, it is possible to suppress the decrease in the life due to water or oxygen, and to achieve an effect of prolonging the life. (Best Mode for Carrying Out the Invention) A water- and oxygen-trapping agent and a top-emission type organic EL device for a top emission type organic EL device according to an embodiment of the present invention will be described below. The water and oxygen scavengers according to the embodiment of the present invention are characterized by the fact that the compound of the following formula (1) alone exhibits a decrease in the functionality of water and oxygen, which is superior to the organic EL panel. Various capture agents. R1R2R3M (1) In the formula (1), R1, R2 and R3 are each independently selected from a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cyclic alkyl group, an aryl group, an alkoxy group. One of the group consisting of a base group, a carboxyl group, a thiol group and a second-order amine group may be the same or different from each other, but if one or more C-Μ bonds are selected, here Μ It is aluminum or boron. The basis of R1, R2, and R3 is preferably from 1 to 20 carbon atoms, more preferably from 2 to 18, and may be the same or different. These compounds react with the C-M bond by water, oxygen, etc., and function as a scavenger for the organic EL device. The reaction with water is as shown in the following formula. C - Μ + Η 2 〇 ~^ C -H + M ( OH) -9- 200803602 (6) The reaction with oxygen is as shown in the following formula. 2C-M + 〇2 - 2C - 0 - 具体 Specific examples of R1, R2 and R3 of the above formula (1) can be suitably exemplified: hydrogen, methyl, ethyl, propyl, butyl, pentyl, hexyl , heptyl, octyl, decyl, fluorenyl, carbon-based, 12-carbon-based, hexadecanoyl, octadecyl carbon having 1 to 18 carbon atoms, propenyl, butenyl An octenyl group having an unsaturated group, an alkynyl group, a propynyl group, an alkynyl group of a phenylethynyl group, a cyclopropyl group, an alicyclic alkyl group of a cyclohexyl group, An alkoxy group such as a phenyl group, an aryl group of a benzyl group, an ethoxy group, a propoxy group or a butoxy group. These alkyl groups, alkenyl groups, alkynyl groups and alkoxy groups may be linear or cyclic, and may be branched. Specific examples of the compound represented by the above formula (1) include, for example, triethyl aluminum, tri-n-propyl aluminum, triisopropyl aluminum, tricyclopropyl aluminum, tri-n-butyl aluminum, and triisobutyl group. Aluminum, tri-tert-butyl aluminum, tri-2-methylbutyl aluminum, tri-n-hexyl aluminum, tricyclohexyl aluminum, tris(2-ethylhexyl)aluminum, tri-n-octyl aluminum, tri-n-decyl Aluminum, triphenylaluminum, trityl aluminum, dimethylphenylaluminum, dibutylphenylaluminum, diisobutylphenylaluminum, methyldiphenylaluminum, ethoxydiethylaluminum, Ethoxydi-n-octyl aluminum, triethyl boron, tributyl boron, tri-n-octyl boron, tri-n-dodecyl boron, triphenyl boron, and the like. These compounds may be used singly or in combination of two or more kinds of compounds. Considering the vapor of the product produced by the reaction with water, oxygen, etc., the temperature is 8 or more, preferably the tri-n-octyl aluminum, the tri-n-decyl aluminum, Tri-n-dodecyl aluminum and the like. When considering the trapping agent composition, it is preferably tri-n-octyl aluminum or tri-n-decyl aluminum. The type of the binder of the capturing agent used in the embodiment of the present invention may be an inorganic material or an organic material. The old machine binder may, for example, be a polymer of alkoxy decane. The alkoxy decane may, for example, be tetramethoxy decane, methyl trimethoxy decane, ethyl tri φ methoxy decane, dimethoxy dimethyl decane, dimethoxy diethyl decane, tetraethoxy Base decane, methyl triethoxy decane, ethyl triethoxy decane, diethoxy dimethyl decane, diethoxy diethyl decane, dimethoxymethyl phenyl decane, and the like. Further, in order to increase the film strength, a small amount of chromium alkoxide may be added. The polymer of the hospital's oxygen sands is made by adding 0.1 mol% or more of water to the courtyard of the hospital, and further adding a very small amount of acid or alkali as a catalyst to cause a reaction. The polymerization reaction can also be carried out by heating without adding a catalyst. The reaction solution Φ liquid is concentrated and dried at a high temperature to obtain a polymer, but it is preferably dissolved in a solvent and stored. ^ Organic binders can use transparent resins that are not compatible with the capture agent. For example, acrylic resin, styrene resin, and the like. Further, a liquid polymer or a stone oleoresin can be used as the organic binder. The liquid polymer may, for example, be liquid polybutene or liquid polybutadiene. Examples of the petroleum resin include, for example, Nisshin Ne〇P〇lymer. Further, various rubbers can be used for the organic binder. For example, styrene-butadiene rubber, polyisobutadiene, polybutadiene, butyl rubber or the like can also be used. -11 - 200803602 (8) It is also possible to mix an organic binder with an inorganic binder, or a pre-reacted mixed resin. The resin to be mixed and molded may, for example, be an acrylic polyoxyl system such as Kaneka Gemlac. A solution for forming a coating film can be prepared by dissolving these transparent resins in an organic solvent. The concentration of the resin solution is 10% by weight or more, preferably 20 to 80% by weight. ‘ The capture agent coating film is produced in a binder solution. The solid component of the binder is added to the solid component of the binder, and the amount of the scavenger containing the compound of the present invention is preferably 1% by weight or more, preferably 20 to 80% by weight, and sufficiently stirred to obtain a uniform solution. The trapping agent solution is applied to a sealing substrate of a top emission type organic EL device, for example, a cover glass substrate or a desired position of the apparatus in an inert atmosphere, and then the volatile component is distilled off. The coating method may be a method such as a spinner, a sprayer, a roll coater, a sprayer, a droplet discharge method, or a dispenser, and is not particularly limited. The film formation temperature is preferably 50 to 200 ° C, and is not particularly limited as long as the volatile component such as the solvent of the coating solution can be removed. The coating method of the composition is not particularly limited, and may be a method such as a spin coating method, a roll coating method, a curtain coating method φ, a dip coating method, a spray coating method, or a droplet discharge method. It is preferably an ink jet method. The film formation temperature is 50 ° C or higher, more preferably 100 to 150 ° C. The temperature of the solvent of the coating solution can be sufficiently removed, and is not particularly limited. The top emission type organic EL device according to the embodiment of the present invention is easy to handle with water and oxygen, and the water and oxygen capture energy are excellent. Further, even a very small concentration can exhibit a sufficient function, and optical characteristics (visible light transmittance and refractive index) are excellent. The representative optical characteristic of the above-mentioned trapping material is that the transmittance of light in the visible light region (400 to 800 nm) is 95% or more, and the refractive index (wavelength: 589.3 nm (sodium D line)·, using -12-200803602 (9), In 20 ° C) is 1_2~1·8. As described above, since the optical characteristics are excellent, it is suitable for a top emission type organic EL device which can widely adopt an opening portion, and can greatly improve the luminescence lifetime of the organic EL device.
又，本發明之實施形態的捕捉劑係可使捕捉劑溶液形 t 成均一的溶液。故藉塗佈法而可配置於頂發射型有機EL 裝置之各式各樣的位置。 % 又，若依本發明之頂發射型有機EL裝置（從如薄膜 電晶體之驅動電路基板之相反側的光取出部分進行其光取 出之有機EL裝置），將可見光區域中之光透過率等的光 學特性優之有機金屬化合物配置於前述光取出部分，亦不 使其裝置特性品質劣化，因作用爲水及氧捕捉劑，故可進 行高品質之顯示，同時並可謀求長壽命化。 【實施方式】 [實施例] [實施例1]， 於已充分乾燥之流動石鱲的50%甲苯溶液l〇〇g中使 三辛基鋁1 〇 〇 g均一地溶解而製作捕捉劑溶液。使前述捕 捉劑溶液以噴墨法塗佈於500μπι厚玻璃基板每單位RGB 像素面積單位後，以140 °C加熱成膜20分鐘。其次，從具 有薄膜電晶體元件之基板側層合A1/Ca作爲陰極’層合高 分子型之各RGB的發光像素作爲發光層’層合導電性高 分子（Bayer公司製之PEDOT-PSS)作爲電洞注入層，層 -13- 200803602 (10) 合附有ITO玻璃基板（50 Ομιη厚）作爲陽極，於其上，於 面板全體之密封貼合附捕捉劑之玻璃。所得到之頂發射型 有機E L裝置係顯示優異之發光亮度，無黑點（非發光點 )之生成，顯示發光壽命亦良好的値。 於圖1中顯示三辛基鋁之脫水性能。圖1係載置於鋁 • 皿中乾燥固化之三辛基鋁1.5g而密閉之內容積640 cm3的 容器中，以靜置於容器內之濕度感測器測定容器內之濕度 φ 的隨時間變化之結果。與氧化鈣、及Hope製藥製Olive AOO (主成分：氧化鋁辛酸酯）比較作爲比較對象。三辛 基鋁（圖1之曲線A)係對於比較對象之2個捕捉劑，而 顯示優異之吸濕能力。 於圖2中顯示三辛基鋁之脫氧性能。測定係與圖1之 脫水性能的情形同樣做法而實施。又，三辛基鋁係使用 2·0克，以氧感測器測定容器內之氧濃度的隨時間變化。 如圖2所示般，三辛基鋁（圖2之曲線Α)係顯示優異之 • 脫氧能力。 (實施例2) 於使二環戊基甲基丙烯酸酯（日立化成製FA-513M) ‘ 以ΑΙΒΝ (偶氮雙異丁腈）聚合之50wt%二甘醇二甲醚 l〇〇g添加三-正十二烷基鋁l〇〇g而均一地混合溶解。使用 前述組成物作爲捕捉劑，與實施例1同樣地製作之頂發射 型有機EL裝置基板係顯示良好的發光亮度，無黑點之生 成，發光壽命亦良好。 -14- 200803602 (11) [比較例l] 與實施例1相同之捕捉劑組成物以噴墨法，在薄膜電 晶體元件基板側之像素部附近塗佈於配線間之空間，以 140 °c加熱成膜20分鐘。配置高分子型之各RGB的發光 像素，貼合500 μιη之厚玻璃板-，進行密封。所得到之頂發 射型有機EL裝置面板係初期顯示良好的發光亮度，但爲 於配線間配置捕捉劑，其絕對量很少，故黑點從初期顯現 ，發光壽命亦比實施例1短。 [產業上之利用可能性] 頂發射型有機EL裝置係可於光取出部分等之各種位 置配置水及氧之捕捉劑。 【圖式簡單說明】Further, the scavenger according to the embodiment of the present invention allows the trapping agent solution to be formed into a uniform solution. Therefore, it can be disposed in various positions of the top emission type organic EL device by the coating method. In addition, according to the top emission type organic EL device of the present invention (the organic EL device which performs light extraction from the light extraction portion on the opposite side of the drive circuit substrate of the thin film transistor), the light transmittance in the visible light region is obtained. The organic metal compound having excellent optical characteristics is disposed in the light extraction portion, and does not deteriorate the device characteristic quality. Since it acts as a water and an oxygen scavenger, high-quality display can be performed and life can be extended. [Embodiment] [Examples] [Example 1] A tricapryaluminum 1 〇 〇 g was uniformly dissolved in a 50% toluene solution of a well-dried mobile sarcophagus to prepare a scavenger solution. The above-mentioned trap solution was applied by an inkjet method to a 500 μm thick glass substrate per unit RGB pixel area unit, and then formed into a film at 140 ° C for 20 minutes. Next, a luminescent pixel of each RGB in which A1/Ca is a cathode-layered polymer type is laminated as a light-emitting layer from a substrate having a thin film transistor element as a light-emitting layer, and a conductive polymer (PEDOT-PSS manufactured by Bayer Co., Ltd.) is used as a light-emitting layer. Hole injection layer, layer-13- 200803602 (10) An ITO glass substrate (50 Ομηη thick) is attached as an anode, and a glass with a trapping agent is attached to the entire panel. The obtained top emission type organic EL device showed excellent light emission luminance, and no black spots (non-light-emitting points) were formed, and the light-emitting lifetime was also good. The dehydration performance of trioctyl aluminum is shown in FIG. Fig. 1 is a container of 1.5 g of dry-solidified trioctyl aluminum in an aluminum dish and sealed in a volume of 640 cm3, and the humidity φ in the container is measured with time by a humidity sensor placed in the container. The result of the change. It was compared with calcium oxide and Olive AOO (main component: alumina octanoate) manufactured by Hope Pharmaceuticals. Trioctyl aluminum (curve A of Fig. 1) showed excellent moisture absorption capacity for the two capture agents of the comparison object. The deoxidation performance of trioctyl aluminum is shown in FIG. The measurement was carried out in the same manner as in the case of the dehydration performance of Fig. 1. Further, in the case of trioctyl aluminum, 2.00 g was used, and the oxygen concentration in the vessel was measured with time by an oxygen sensor. As shown in Fig. 2, trioctyl aluminum (curve 图 of Fig. 2) shows excellent deoxidation ability. (Example 2) Addition of dicyclopentyl methacrylate (FA-513M manufactured by Hitachi Chemical Co., Ltd.) 50 wt% diglyme l〇〇g polymerized with hydrazine (azobisisobutyronitrile) - n-dodecyl aluminum l〇〇g and uniformly mixed and dissolved. Using the above-mentioned composition as a scavenger, the top emission type organic EL device substrate produced in the same manner as in Example 1 exhibited good luminance, no black spots, and good luminescence lifetime. -14-200803602 (11) [Comparative Example 1] The same trapping agent composition as in Example 1 was applied to the space between the wirings in the vicinity of the pixel portion on the side of the thin film transistor element by an inkjet method at 140 °C. The film was formed by heating for 20 minutes. The RGB light-emitting pixels of the polymer type are placed and bonded to a thick glass plate of 500 μm to seal. The obtained top-emission type organic EL device panel showed good light-emitting luminance at the beginning, but the amount of the trapping agent was small in the initial arrangement of the trapping agent, so that the black dot appeared from the initial stage and the light-emitting lifetime was shorter than that of the first embodiment. [Industrial Applicability] The top emission type organic EL device is capable of disposing a trapping agent for water and oxygen at various positions such as a light extraction portion. [Simple description of the map]
圖1係顯示本發明之實施例的頂發射型有機EL裝置 用捕捉劑之捕水性能特性。 圖2係顯示本發明之實施例的頂發射型有機EL裝置 用捕捉劑之脫氧性能特性。 -15-Fig. 1 is a graph showing the water trapping performance characteristics of a scavenger for a top emission type organic EL device of an embodiment of the present invention. Fig. 2 is a graph showing the deoxidation performance characteristics of a scavenger for a top emission type organic EL device of an embodiment of the present invention. -15-